Dressellians were a type of sentient humanoid species who were native to the planet Dressel. Until the eruption of the Galactic Civil War, they existed in tranquil seclusion, untouched by strife. This species demonstrated allegiance to the Galactic Republic, and many Dressellians enlisted in the Rebel Alliance after the Republic's fall. Their physical characteristics included smooth, hairless heads and wrinkled faces and skulls. Orrimaarko, a male Dressellian, fought as a soldier for the Rebel Alliance during the Galactic Civil War.
After the dissolution of the Imperial Senate, Mon Mothma, the Commander-in-Chief of the Rebel Alliance, recorded in her journal within the Rebel Files that she viewed the Dressellians, together with the Mon Cal and Sullustans, as particularly susceptible to harm and suggested that the Alliance should contemplate accepting refugees from these populations.
A Dressellian resistance member, Lokmarcha, held the rank of major within the Rebel Alliance during the Galactic Civil War. Just prior to the Battle of Endor, a number of other Dressellians were present at the Alliance briefing where the assault on the Galactic Empire's second Death Star was planned.